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Standord
am plitude
ca lib ra to r
Vertical Controls
VOLTS/DIV
VARIABLE
INPUT
Vertical POSITION
X 10 VERT GAIN
Triggering Controls
TRIGGER
Trig/Horiz Coupling
EXT TRIG OR
HORIZ ATTEN
(side panel)
Horizontal Controls
TIME/DIV
VARIABLE
Horizontal POSITION
X 1 0 HORIZ MAG
CRT Controls
FOCUS
INTENSITY
Power Controls
POWER
Power Pack (rear panel)
4 2 -in c h 50-ohm
BNC coblo
Fig. 6 -1 8 . In itia l te st e q u ip m e n t se tu p fo r steps 3 9 th ro u g h 4 5 .
.5
CAL
GND
Midrange
Pushed in
+
AUTO
EXT TRIG OR
HORIZ DC
I X
EXT HORIZ
CAL
Midrange
Pulled out
Adjust for focused display
Adjust for visible display
ON
EXT DC
BNC term ination
39. Adjust External Horizontal Variable
Balance
a. Test equipment setup is shown in Fig. 6-18.
b. Position the dot to the center of the graticule with the
POSITION controls.
c. CHECK— Rotate the EXT HORIZ VAR control (VARI
ABLE TIME/DIV) throughout its range. Dot should not move
horizontally.
d. ADJUST—Ext Horiz Var Bal adjustment, R218 (see Fig.
6-19), for no trace shift as the EXT HORIZ VAR control is
rotated. If necessary, use the horizontal POSITION control
to keep the dot on the screen during adjustment.
40. Check External Horizontal Deflection Factor
a. Change the following control settings:
EXT HORIZ VAR
X 1 0 HORIZ MAG
b. Position the dot to the left vertical line of the grati
cule with the horizontal POSITION control.
c. Connect the standard amplitude calibrator to the EXT
TRIG OR HORIZ INPUT connector with the 42-inch BNC
cable.
Calibration— Type 323
lo w -fre q u e n cy
tine -w ave
generator
O
CAL (clockwise)
Pushed in
6-23
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